^start of string
httpthe literal text http (case insensitive) s?optionally matches the literal s (11510 / 1638 / 7316) (case insensitive)
:the literal : (5810 / 728 / 3A16)
\/the literal / (4710 / 578 / 2F16)
\/the literal / (4710 / 578 / 2F16)
wwwthe literal text www (case insensitive) \.the literal . (4610 / 568 / 2E16)
tiktokthe literal text tiktok (case insensitive) \.the literal . (4610 / 568 / 2E16)
comthe literal text com (case insensitive) \/the literal / (4710 / 578 / 2F16)
@the literal @ (6410 / 1008 / 4016)
.+any character (except for line terminators), repeated at least once
\/?optionally matches the literal / (4710 / 578 / 2F16)
$end of string, or before its final line terminator
i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters